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Joann ',Raiasofir, yor Naw rome MACHINE M-oLDING Baron on mnivmnnnn'favrort'rhm speeieation or Letters Patentna -4,44s,-aatea April a., 184e,

To all whom t mafgfconeem description thereof, reference being had to the accompanying drawings, making a part of this specification.

Figure l is an isometrical projection of my improved brick molding machine with; some portions of it removed. Figs. :2, 3, 4,.

and 5, are views l`of different parts detached, from the machine showin-g their form and,

manner of construction.

I construct the frame of my brick machine j of .posts andcross pieces, in any well kno-wn or usual manner, in the upper part of thel frame work, I Vplace a tempering box s, constructed as usual.

The ytenons* '05, a, on the' top of the side posts T, are yfor the reception of a cap piece for securmg a 'tempering openings in the grating correspond with theV size of the molds in which the brick are formed. On each side of the grating R, there are projections with grooves b, b, in them in which the vibrating grating and panel frame B, Fig. 2 is fitted. The bars c, c, between the apertures of the grating R, and also between the apertures in the vibrating frame B, swell out at their oenters, and diminish in size at each end, making the apertures of the grating narrower in the middle than at the ends. The apertures in the grating R, and also in the Vibrating frame B, diminish in size from their Iear to their front sides. The rear side of the apertures in the vibrating frame, exactly correspond in size with the apertures on the front side of the grating R, so that when they are brought opposite each other by the elevation of the vibrating frame, the sides of the apertures in each are in a straight line with each other tapering outward. The

mold C, (see Fig. 5) in which the brick area romige, is melena in. .aant of the `vitra- 'in'g frame B, follows: Its 'flower side passes-into a vrecess in the .rear of the joint WV, on the 'shelf D, its upper side is secured lpressed against 'the vibrating frame by the clamp E, hinged to the front corner iposts.

Y, :is a guide fon the end of the shelf D, for regulating the vposition Iof the mold C, when the righthand of the mold presses Aagainst th'e 'guide Y, fthe recesses in the same for the forming of brick are exactly opposite the apertures the vibrating frame when it is in an elevated position, 'opposite vthe kstationary grating Iin frontof the 'mortar L bOX .The vibrating frame :B is moved up "and 'down in the following manner: H, is a shaft passing cros'swise fthe machine, the "journals of which are secured in boxes made fast to the sills ofthesan'e; on the ien'd's of this shaft which project #beyond the machine, there are levers Gr, l'of 'suitable length, the ends of these vibrating levers are connected to the arms ai, projecting from the upper corners of the vibrating frame, by the con necting pieces F, F. On the right hand of the shaft H, there is made fast an upright hand lever I by drawing this forward the vibrating frame is elevated so as to bring the apertures in the same opposite those in the grating in front of the mortar box V. The rear side of the mortar box V, is closed by the platen A, for pressing the brick into the mold. The platen A1 is supported and operates as follows: The shaft N, passes crosswise the machine, under the mortar box, and has its journals secured in boxes made fast to the sills of the machine. The posts M, which support the platen at each end, are let into and secured to the shaft N. To the rear of each end of the platen, there are made fast segments of a circular rack K. Immediately below the racks K, there crosses the machine a shaft P, the journals of which are secured in boxes made fast the side pieces Z, of the frame; at each end of the shaft P, there are segment pinions L, the teeth of which work intothe teeth in the racks K. On the projecting end of the shaft P, is made fast a bent lever Q, by drawing this forward the platen is forced forward by the action of the pinion L and rack K. There should be sufficient backward inclination given to the posts M, that support the platen, to enable the platen to fall back of itself, when the power is removed from the lever Q. Operation: When the mold C, is secured as herein described, the vibrating frame elevated, and the mortar box filled with mortar, the lever Q, is drawn forward, which causes the platen to force the mortar through the stationary and vibrating gratings into the mold; the lever I, is then pushed back, thereby forcing down the vibrating frame which carries with itf the mortar, in the apertures of its grating, and gives a smooth surface to the face of the brick in the mold, by the action 0f the sharp corner of the cross piece ai, forming the upper end of the apertures.. The panels which close the apertures in the upper part of the vibrating frame, are placed a sufIi-' cient distance back from the front edge of the cross piece d, and divisions g, g, to pre-` vent any friction from the panels upon thei face of the brick; the only friction being between the divisions g, g, of the vibrating` frame, and the divisions f, f, of the mold.` After forcing down the vibrating frame B,1 the clamp E, is raised and the mold C, is turned down upon the shelf D, and re; moved; another mold C, is immediately; placed in the machine, the lever I, is then4 drawn forward raising the vibrating frame B, and depositing the mortar carried down rin its grating in the recesses in the mold C,

the lever Q, is then drawn forward which forces the mortar through the gratings in the vibrating and stationary gratings and thoroughly fills the recesses in the mold C. On removing the power from the lever Q, the platen A falls back; the vibrating frame is then forced down, and the mold is removed, and its place supplied by another.

My object in making the apertures in the grating R, and vibrating frame B, the form herein described, viz. narrower at their centers than at the ends is for the purpose of forcing the 'mortar` more perfectly into the corners `of the recesses in the mold, and

,making a more uniform and perfect brick;

which I accomplish by this form of opening in the stationary and vibrating grating. The opening in the grating being narrowest :at the center, causes the platen to act with JOEL L. RANSOM.

Witnesses:

Z. C. ROBBINB, T. C. DoNN. 

